Just as Mark Clark said, what a No Labels candidate would do is put Trump back in the White House. Assuming No Labels gets a candidate on the ballot in the handful of critical swing states.

The reason being there are people voting for Trump and people voting against Trump. So, a No Labels candidate would split the anti-Trump vote.

There's no substantial pro-Biden bloc of voters. That goes for most all of the neoliberal Dems. In the US, we’ve got pro-Republican voters and anti-Republican voters.

Lesser evilism isn’t very inspiring. Combine that with an increasingly anti-majoritarian political system and it’s no wonder the Republican Party has much more power than the Democratic Party nationwide. Those who suggest the GOP is headed toward extinction are living in fantasy land.

Now, if somehow Trump isn't the GOP nominee, No Labels probably won't run anyone. But that would also likely be bad for Biden. Because most non-Trump GOP nominees will beat Biden (i.e., win the electoral college vote).

Center-right Dems simply don't appeal to very many people. At the same time, there is no organized Left in the US. We've got 2 parties serving plutocracy with 1 of those parties being much better on strictly social issues. That some people think of the Democratic Party as left wing is a bad joke. The US perspective is ridiculously skewed.

The fact that a decidedly right wing group (No Labels) is a greater threat to Biden than Trump says all you need to know about the state of US politics.